Application Of Injection Molding Screw Barrel

  • How to use Injection Molding Screw Barrel

    1. Do not turn on the machine when the barrel has not reached the preset temperature. The new type of electric heating generally requires the temperature to reach the set value for 30 minutes before the screw can be operated
    2. If the machine is shut down for more than half an hour each time, it is best to close the blanking port, clean the material in the barrel, and set heat preservation
    3. Avoid foreign matter falling into the barrel and damaging the screw and barrel. Prevent metal chips and debris from falling into the hopper. If processing recycled materials, a magnetic hopper should be installed to prevent iron filings from entering the hopper.
    4. When using reverse rescue, make sure that the plastic in the barrel is completely melted, so as not to damage the transmission system parts when the screw retreats.
    5. Avoid the phenomenon of screw idling and slipping.
    6. When using new plastic, the remaining materials in the barrel should be cleaned up. When using POM, PVC, PA+GF and other materials, minimize the degradation of the raw materials, and rinse them with ABS and other nozzle materials in time after shutdown.
    7. Avoid mixing POM and PVC into the barrel at the same time, which will react at the melting temperature and cause serious industrial accidents.
    8. When the melt temperature is normal but black spots or discoloration are often found in the melt, check whether the screw non-return ring (baffle, meson) is damaged.

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